OK, heres a question thats needs an answer as Ive been talking to a friend about a thread on another forum and we couldn't agree

With a new pcp rifle, what is unacceptable grouping at any given yardage and at what point does a manufacturer have to accept its no good and refund or replace, is there a given accuracy standard allready that has to be delivered by the said rifle as we buy rifles to hit things dont we, be it targets or vermin. Would the group size be considered the same for any pcp rifle

Chris